Yeah, yeah, I should be working. But I had to do this. I found a heart❤️ on Mars made by dust devils:
Dust devil track heart, CTX image D10_031038_1258 Image Credit: NASA/JPL/Malin Space Science Systems
The wind blows dust devils around, so sometimes they meander this way and that. Straighter paths are probably created by stronger winds, which sweep the dust devils along in a straight line. Curvy tracks like these are probably made when the winds are weaker, so the dust devil paths are more affected by turbulent convective activity, which can move in any direction.